CM-ET Prostar - Manual (Page 12)

11
RECOMMENDED SPARE PARTS
To insure continued service of the Prostar Hoist, the
following is a list of parts that are recommended to be kept
on hand at all times to replace parts that have worn or failed.
Parts applicable to your hoist should be stocked.
KEY. PART QTY. KEY PART QTY
NO. NAME PER HOIST NO. NAME PER HOIST
620-122 BRAKE FIELD ASSEM. 1 620-117 BRAKE DISC 1
620-106 CAPACITOR 1 620-110 CUT-OUT 1
DEVICE
620-181 TRANSFORMER 1 620-178 REVERSING 1
CONTACTOR
624-232 CONTROL STATION 1 624-306 CONTROL STATION 1
PARTS KIT
Refer to page 14 for ordering instructions and the Parts List for part numbers.
OPEN OR SHORT CIRCUIT IN ELECTRICAL
COMPONENTS
Open circuits in electrical components may be detected by
isolating the component and checking for continuity using
an ohmmeter. Short circuits are indicated by D.C. resistance
substantially below the nominal D.C. resistance. Motor
current draw should be measured at the end of the power
cord while the hoist is raising rated load. Check cut-out
device (on single phase units only) by measuring coil
resistance (terminals 3 and 4) and making sure the contact
(terminals 2 and 4) is open.
ELECTRICAL DATA FOR COMPONENTS
Stators
Volts-Phase-Hertz Full Load Current Nominal D.C.
(Amps) Resistance (Ohms)
110 to 120-1-50/60 2.7 Yellow to Red: 7.7
Blue to Black: 6.2
220-1-50 1.1 Yellow to Red: 27.7
Blue to Black: 24.2
220-3-50 1.1 White to Red: 26.8
230-3-60 0.6 White to Black: 26.8
Red to Black: 26.8
380-3-50 0.63 White to Red: 72.6
415-3-50 0.58 White to Black: 72.6
460-3-60 0.88 Red to Black: 72.6
575-3-60 0.4 White to Red: 140.0
White to Black: 140.0
Red to Black: 140.0
Transformers
Primary 220/380v. 230/460v. 460v. 575v. 575v.
Secondary 48v. 115v. 48v. 115v. 48v.
Leads Nominal D.C. Resistance (ohms)
Black to Purple 11.7 71.0 11.9 73 98
White to Red 228.0 224.0
White to Yellow 614.0 902.0 - - -
Red to Yellow 384.0 682.0 - - -
White to Orange - - 916.0 1100 1100
Coils
Voltage Current Nominal D.C.
Draw (Amps) Resistance (Ohms)
Contactor 115 0.02 765
Coils 48 0.2 98.4
Brake *115 - *272
Field **220 - 1120
***280 - 1608
Cut-out 115 0.1 Terminals 3 to 4: 0.3
Device
*to measure 115 volt brake coil resistance, carefully cut and
peel back the shrink tubing on the brake coil leads to
expose the diodes. Trace the leads from the coil to the
diodes. Connect the ohmmeter leads at the coil side of the
diodes (refer to the wiring diagram) and measure the
resistance. If coil is ok, reinsulate the brake coil leads and
diodes using electrical tape. Diodes are checked by
connecting the ohmmeter to the ends of the brake coil
leads, checking for an open or short circuit, reversing the
connections to the ohmmeter and again checking for an
open or short circuit. If there is an indication of an open or
short circuit with the original and reversed connections,
diodes are defective and the brake field (620-122), which
includes the diodes, must be replaced. Usable diodes are
indicated by continuity with the original connections and an
open circuit when the connections are reversed or, an open
circuit with the original connection and continuity with
reversed connections.
** 220 volt brake coil is used on 220-1-50, 220-3-50/60,
380-3-50, 415-3-50 and 460-3-60 hoists.
***280 volt brake is used on 575-3-60 hoists.
ELECTRICAL DATA